add checking settings periodic

- Change initial args `TwentyNineHours`: settings -> path

- Add periodic task to  `TwentyNineHours::Streamer`
-  `TwentyNineHours::Streamer` accepts changing matchers, notifiers and linker

- Add a periodic task to checking and updating setting

I'd to update settings without restarting 29hours.rb :space_invader: